Powdery Mildew Cross Listing

Gerald Holmes, California Polytechnic State University at San Luis Obispo, Bugwood.org

While some powdery mildews attack a very few specific plants, others have a broad host range and infect many different plants. It is important to recognize this because if a particular powdery mildew is infecting a plant in your nursery or greenhouse, you need to know what other plants might be at risk to the fungus as you decide what plants should be treated with a fungicide.

Host Plant

Golovinomyces chicoracearum

Erysiphe polygoni

Phyllactinia guttata

Sphaerotheca fuliginea

Podosphaera macularis

Podospheara pannosa

Microsphaera penicillata

Podosphaera clandestina

Podosphaera xanthii

Leveillula taurica

Acer

X

X

X

Achillea

X

Aesculus

X

Agastache

X

X

Ageratum

X

Ajuga

X

Alnus

X

X

Amelanchier

X

X

X

Angelonia

X

Antirrhinum

X

Artemesia

X

Aquilegia

X

Asclepias

X

X

Aster

X

Astilbe

X

Baptista

X

X

Begonia

X

X

Berberis

X

Betula

X

X

Bidens

X

X

X

Boltonia

X

Calendula

X

X

Callistephus

X

X

Campanula

X

Capsicum

X

Carica

X

Carpinus

X

Castanea

X

Catalpa

X

Ceanothus

X

X

X

Centaurea

X

Chysanthemum

X

Clematis

X

Coreopsis

X

Cornus

X

X

X

Corylus

X

X

X

Crassula

Crataegus

X

X

Cosmos

X

Crotalaria

X

Cucumis

X

X

X

Cucurbita

X

X

X

X

Cuphea

X

Dahlia

X

X

Daucus

X

Delphinium

X

X

X

Eucalyptus

X

Euonymus

X

Fagus

X

X

Fragaria

X

X

X

Fraxinus

X

X

X

Gaillardia

X

X

X

Gardenia

X

Gaura

X

Gleditsia

X

Geranium

X

X

X

Gerbera

X

X

X

Geum

Gloxinia

X

Hedera

X

Helenium

X

Helianthus

X

X

X

Heliopsis

X

Heuchera

X

X

X

X

X

Hibiscus

X

Hieracium

X

X

Hydrangea

X

Hypericum

x

X

Iberis

Ilex

X

X

Juglans

X

X

Kalanchoe

X

Kalmia

X

Lactuca

X

X

X

Lagenaria

X

Lamium

X

Leucothoe

X

Liatris

X

Linaria

X

Liriodendron

X

X

Lithospermum

X

Lonicera

X

X

Lupinus

X

X

Lycopersicon

X

Magnolia

X

X

Malus

X

X

X

X

Matricaria

X

X

X

Medicago

X

Mentha

X

X

X

X

Mimulus

X

Monarda

X

Myosotis

X

Nicotiana

X

Oenothera

X

Paeonia

X

Papaver

X

Penstemon

X

Phaseolus

X

Phlox

X

X

X

Pisum

X

Plantago

X

X

X

X

Plantanus

X

Polygonum

X

X

Populus

X

X

X

Potentilla

X

X

X

Primula

X

Prunus

X

X

X

Quercus

X

X

X

Ramunculus

X

X

Rhododendron

X

X

X

Rhus

X

X

X

X

Ribes

X

X

Robinia

X

X

Rosa

X

X

X

X

Rubus

X

X

Rudbeckia

X

X

Rumex

X

Salix

Salvia

X

Sassafras

X

Saxifraga

X

X

Scabiosa

X

Scrophularia

X

Sedum

X

Senecio

X

X

X

Solanum

X

Solidago

X

X

X

Spirea

X

X

X

X

Stachys

X

X

Stokesia

X

Syringa

X

Taraxacum

X

X

X

X

Tiarella

X

Tilia

X

X

Trifolium

X

X

X

Ulmus

X

X

Vaccinium

X

X

Verbascum

X

Verbena

X

X

Veronica

X

X

Viburnum

X

Vigna

X

Viola

X

X

X

Zinnia

X

Overview

Authors

Gary W. Moorman, Ph.D.

Professor Emeritus Pennsylvania State University

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